Swiss watchmaker Hublot has unveiled a new Big Bang MECA-10 42mm in three editions of King Gold, Titanium, and Frosted Carbon, in addition to the Big Bang Tourbillon Automatic Green SAXEM with an emerald hue, as well as a trio of vibrant hues in the Spirit of Big Bang collection during the 2025 LVMH Watch Week
Big Bang MECA-10
Hublot brings back the MECA- 10 with an optimised calibre in a more compact 42mm case in King Gold, Titanium, and Frosted Carbon. Void of a conventional dial, the MECA-10 makes visible and aestheticizes something that is normally hidden. Inspired by Meccano-type construction systems, the MECA-10 is a masterclass in micromechanical engineering and a creatively intriguing spin on how we perceive mechanics and the motion of time itself.
Hublot revisits the unique take on the manual-winding skeleton movement of the original Big Bang MECA-10 with a refined, open, and coherent display, while maintaining its distinctive construction that’s elevated with refined finishing and decoration. For the engineers and watchmakers at Hublot, the challenge was to preserve all that makes the MECA-10 so original, while reducing its dimensions to fit the 42mm Big Bang case without compromising its performance.
Consisting of three linear bridges attached to the main plate, the new and improved MECA-10 is visibly different from its predecessor, with numerous evolutions. The bridges are decorated with satin-brushed surfaces and hand-polished bevels, elevating the notion of haute horlogerie in such an avant-garde and unusual movement. For each of the three different versions in King Gold, Titanium and Frosted Carbon, the movement is galvanically coloured to match the cases with 5N gold tones, metallic grey, and black respectively.
True to its name, the Big Bang MECA-10 features an impressive power reserve of 10 days and an outstanding power reserve indicator. Delivered by two mainspring barrels, the energy level of the movement can be read by means of a digital display that shows the power reserve as the number of days of autonomy remaining. These indications are driven by a “crémaillère” rack system rarely seen in mechanical watches, consisting of a linear gear engaging a circular gear, moving in a straight line.
This mechanism, more subtle than it appears, is composed of two superimposed disks rotating in opposite directions and connected by a spiral spring that coils in their centre like the barrel spring. This results in a very surprising differential display that is nevertheless intuitive to read. In fact, the MECA10’s power reserve exceeds ten days, but its display is capped at ten days as that’s the range of optimal chronometric performance, a testament to its precision. This new and ingenious manual winding system guarantees perfect synchronisation between the power reserve display and the optimal winding level of the barrel springs.
The balance wheel, positioned on the dial side of the movement, is entirely visible. Beyond providing ceaseless animation to the display, it also highlights Hublot’s unique and patented fine adjusted mechanism. The regulating organ features a lubricant-free and paramagnetic silicon escape wheel. For precise time-setting, the new Big Bang MECA-10 features a hacking seconds mechanism.
With more ergonomic proportions, the 42mm case of the Big Bang MECA-10 retains the inherently familiar silhouette. The King Gold and Titanium versions feature the Big Bang’s signature finish of satin-brushed surfaces and polished edges, while the Frosted Carbon is the first of its kind in the Big Bang to join the core collection and, exceptionally, comes on a black Velcro strap to complement the lightweight yet rugged properties of the case. Unlike layered carbon fibre sheets, Frosted carbon has no fixed pattern, making each piece unique in appearance. The Big Bang MECA-10 42mm features Hublot’s ingenious “One Click” system integrated in the case, allowing for easy swapping of the strap.
Big Bang Tourbillon Automatic Green SAXEM
A pioneer when it comes to groundbreaking material innovations, Hublot became the first and only watch brand to use SAXEM, a material that’s related to sapphire while offering more luminous and chromatic possibilities. Now, the manufacture presents the Big Bang Tourbillon Automatic Green SAXEM, combining an intense emerald-green transparent case with its self-winding tourbillon movement in a limited edition of just 18 pieces.
To produce an emerald-like green transparent material, Hublot tapped the world of satellite technology in the form of SAXEM (Sapphire Aluminium oXide and rare Earth Mineral). While it does boast many of the same properties as sapphire such as hardness and transparency, it’s different on a molecular level. While both are made of aluminium oxide, SAXEM is combined with rare earth elements. It is also structurally different, as sapphire is trigonal (three-sided) while SAXEM is cubic (four-sided). This subtle but significant distinction allows for SAXEM to take on intense colours and shine brilliantly, like a precious gemstone.
Within the vibrant and crystalline green SAXEM case beats Hublot’s MHUB6035 automatic tourbillon manufacture calibre, entirely developed, and manufactured in-house. Built with a contemporary architecture, its 22-karat gold micro-rotor is positioned on the dial side of the movement. The winding is smooth and efficient with ceramic ball bearings, allowing the movement to reach a minimum chronometric power reserve of 72 hours. The kinetics of the micro-rotor at 12 o’clock is complemented by the 60-second tourbillon carriage at 6 o’clock. The openness of the construction is accentuated by three functional sapphire elements for the barrel bridge, automatic winding gears bridge, and tourbillon barrette. The dial is tinted darker.
The movement, visible through the open dial, is finished in black tones, contrasting the SAXEM case and matching the crown. The Big Bang’s signature alternating Arabic numerals and baton markers feature a bright green paint with Super-LumiNova, as do the hands. A mix of sandblasted and hand-decorated elements with polished bevelling sunray-brushing are featured. The watch comes on a transparent green rubber strap and black folding clasp.
Spirit of Big Bang Chronograph
Upon its launch in 2014, the Spirit of Big Bang took Hublot fans and watch-lovers by surprise, as it was the very first Hublot since the establishment of the brand decades earlier to feature a case that wasn’t round. And yet, the Spirit of Big Bang is inherently and unmistakably a Hublot. The barrel shape remains a porthole, a window into the future of watchmaking far beyond conventions.
For the first time in the collection, the cases and bezels of the Spirit of Big Bang Chronograph are crafted in coloured ceramics that were previously only available in the round Big Bang shape: Sand Beige, Dark Green, and Sky Blue – each limited to 200 pieces. Colourful, hypoallergenic, light, scratch-resistant, and gender-neutral in their appeal, these three new models are a testament to Hublot’s unrivalled prowess when it comes to cutting-edge materials and developing ceramic for watches in unprecedented tones.
Visible through the open dials, the Spirit of Big Bang Chronograph models are powered by the Hublot automatic skeleton chronograph calibre HUB4700, a modernised descendant of the historic and highly prized El Primero, considered the first Swiss high-frequency integrated chronograph calibre ever made. Visible from both the open dial and sapphire display back, the movement hosts several technical innovations and advancements compared to the original from 1969, including a low-friction silicon escape wheel.
Matching each of the three coloured ceramic cases in this new trio, the dials feature hour markers, chronograph counters, and hands in a matching tone. The rubber straps, made of black rubber with a coloured central inlay, are also perfectly coordinated with the coloured ceramic cases.
